USGS Data Bolsters Key US Rare Earth Project in Montana

SALT LAKE CITY, UT – April 09, 2026 – US Critical Materials Corp. has taken a significant step forward in its quest to develop a major domestic source of rare earth elements, announcing its receipt of a comprehensive geophysical survey from the United States Geological Survey (USGS). The technical report, covering the company’s promising Sheep Creek project in Montana, provides a treasure trove of independently validated data that is expected to accelerate permitting and confirm drilling targets, bolstering a project central to America's push for supply chain independence.

The massive dataset was generated from an extensive airborne survey conducted for the USGS between October 2023 and September 2024. Over 128 helicopter flights amassed 45,506 line-kilometers of magnetic and radiometric measurements across the mineral-rich borderlands of Idaho and Montana. For US Critical Materials, a private company focused on minerals vital to national security, the delivery of this government-validated data provides a powerful, third-party endorsement as it navigates the complex path toward potential production.

"The USGS dataset provides a high‑quality, independently acquired geophysical foundation for the Sheep Creek project," said Harvey Kaye, CEO of US Critical Materials, in a statement. "These deliverables will support our ongoing permitting work and help confirm drilling targets."

The Science of Discovery

The data is far more than just a map; it's a high-tech glimpse beneath the earth's surface. Airborne geophysical surveys measure subtle variations in the planet's magnetic field and natural radiometric signatures. These readings allow geologists to interpret subsurface structures, identify rock types, and pinpoint anomalies that could indicate significant mineral deposits. By using advanced techniques at a precise 200-meter spacing, the survey provides a detailed model that significantly de-risks and focuses future, more expensive exploration activities like drilling.

This scientific foundation is crucial for a project that has already generated significant buzz for its reported mineral grades. The company will now integrate the new USGS geophysical data with its existing geological and geochemical information to create a comprehensive, three-dimensional model of the deposit. This integrated approach is a standard industry practice for moving a project from discovery to development, providing the detailed understanding required for mine planning and regulatory approval.

A Deposit of Strategic National Importance

The Sheep Creek project has been described by US Critical Materials as one of the highest-grade rare earth deposits in the United States, a claim supported by independent lab analyses. Reports indicate Total Rare Earth Oxide (TREO) grades approaching 9%, with a notable 2.4% concentration of neodymium and praseodymium (NdPr)—two of the most critical rare earths used in high-strength permanent magnets for electric vehicles and defense applications.

To put this in perspective, these grades are substantially higher than those reported at other prominent U.S. rare earth projects. For example, American Rare Earths' Halleck Creek project in Wyoming has reported TREO grades around 0.4%, while Idaho Strategic Resources' Lemhi Pass project has shown results up to 5%. Furthermore, the Sheep Creek deposit contains significant grades of gallium, a critical mineral used in semiconductors and advanced radar systems, with concentrations reportedly far exceeding the grades historically imported by the U.S. from China.

Adding to its strategic appeal is the deposit’s relatively low concentration of thorium, a naturally occurring radioactive element often found with rare earths. With thorium levels averaging well below the 500 parts-per-million threshold set by the Nuclear Regulatory Commission, the project may face a more streamlined permitting process compared to deposits with higher radioactive content.

The Geopolitical Race for Critical Minerals

The development of projects like Sheep Creek is unfolding against a backdrop of intense global competition for the resources that power modern technology and defense. The United States is almost entirely dependent on foreign imports for its supply of rare earth elements, with China dominating the global market. Beijing controls an estimated 85% of the world's rare earth processing and refining capacity and over 90% of the manufacturing of essential rare earth alloys and magnets.

This concentration of power creates a profound strategic vulnerability for Western nations, a fact underscored by China's recent export restrictions on gallium. In response, the U.S. government has designated the security of critical mineral supply chains a national priority. Federal agencies, including the Department of Defense and the Department of Energy, have launched multi-billion dollar initiatives to fund and fast-track the development of domestic mining, processing, and recycling capabilities. US Critical Materials has indicated it is actively seeking federal support to advance its project, positioning Sheep Creek as a direct answer to the nation's call for strategic autonomy.

Balancing Opportunity with Environmental Stewardship

While the strategic and economic potential of Sheep Creek is clear, the project is not without its challenges. The proposed mining area is located in Montana's Ravalli County, near the headwaters of the West Fork of the Bitterroot River, a blue-ribbon trout stream and a hub for recreation and tourism. This sensitive location has drawn the attention of local communities and environmental organizations like Montana Trout Unlimited, who have voiced concerns about potential impacts on water quality and critical wildlife habitats.

Navigating these concerns will be paramount to the project's success. The regulatory path will involve extensive environmental reviews under the National Environmental Policy Act (NEPA), overseen by the U.S. Forest Service and the Montana Department of Environmental Quality, which will include opportunities for public comment.

Anticipating these hurdles, US Critical Materials is highlighting its collaboration with the Idaho National Laboratory (INL), a U.S. Department of Energy facility. Through a Cooperative Research and Development Agreement (CRADA), the company is working with INL scientists to develop and pilot novel, environmentally responsible processing technologies. The goal is to move away from the harsh chemical methods traditionally used in rare earth refining, which generate significant toxic waste, and toward cleaner techniques like electrochemical extraction. A pilot-scale processing plant is planned for the INL campus to test these methods on ore from Sheep Creek, representing a critical effort to prove that economic opportunity and environmental stewardship can coexist. The company will now proceed with integrating the vast new dataset to refine its models and prepare for the next phase of permitting and exploration, moving one step closer to potentially unlocking a vital American resource.